Clutch



June 3 1924.

A. LANZETTA Filed Aug. 25 1919 INVILNTOR //vrfm Y H N L Mza-Tf1 Exim f jl/lf ATroRNEYS Patented June 3, 19,24.

umreo STATES ANTHONY LANzE'rTA, or NEW Yoan, N. Y.

y 1,496,059lv CLUTCH Application led August 25, 1919. Serial No. 319,558.

To all whom it may concer/n.:

Be it known that I, ANTHONY LANzE'rTA, a citizen of the United States, residing at New York city, Bronx County, New York, have invented certain new and useful Improvements inClutch'es, of which the following is a specification. l

This invention relates to clutches and has for its principal object to provide a new and improved construction of a clutch Xprovided with a spring to normally hold the cooperating clutch members in riving relationship and to so construct the clutch members that slipping thereof will be permitted when the driving amount, and also so that the movement of the clutch members into driving engagement will produce gradual taking up or transmission of the torque during of suoli movement.I

A further object is to provide a pair of cooperating clutch members, vonehaving a.

plurality of recesses and the other a plurality of projections adapted to engage said recesses and to make each of said projections separately adjustable relatively to the clutch members. Y 'l For the accomplishment of these and such further objects as will hereinafter be apparent to those skilled in the art to which this appertains, the invention consists in the construction, combination and arrangement of parts herein specifically described and illustrated in the accompanying vdrawings, wherein is shown a preferred embodiment of the invention, but it is to be under- -stood that changes, Avariations and modifications may be resorted to-which fall within the scope of the claims hereunto appended. In the drawings forming a portion of this specification:

Fig. 1 is a central longitudinal section through a clutch embodying my invention.

Fig. 2 is an elevation of the engaging face of the female clutch member. Fig.' 3 is a similar view of member and y' dimensions to whic 1 one 'of the clutch members preferably the male member 11 is sui-t-l Fig. 4 is' a similar view of a modified form of the male clutch member.

As shown in the drawings, thenumeral 1`0 indicates a drivin shaft of any suitable ably secured as by means of the set screw 12. The member ll'issha ed to resemble a bevel gear andv is provide with a plane surface torque exceeds a predetermined the initial stages f ,which the the nected to the mechanism to be driven.

the male clutch f 13 and an inclined surface 14, forming a truncated cone shaped surface.

The surface 14 is of irregular or wavelike contour as shown in Fig. 3 having the raised portions 15 and corresponding depressions 16.

The female clutch member 19 is of a cup shaped configuration to engage over the lmember 11 and is provided with the plane of the male member, and the projections on the plane surface being adapted to en age within the recesses 23 provided in the p ane surface 13 of the male member. o

As shown in the drawings, the male clutch.

member which is secured to theshaft 10, has

a gear 24 secured thereto, while the female member 19 is slidably mounted upon the shaft 10 'and is provided with a hub 25 upon lear 26 ismounted to transmit .power y any suitable gear train conwill be understood that'f any of the usual expedients such as a pair of separate aligned driving and driven shafts could be employed instead of the separate gears 24and 26. A spring 27 coiled about the shaft 10 has one end thereof abutting against the face of the hub 25 and the other end thereof abutting against a collar 28 secured to the shaft 10,

Itl

to normally hold female clutch member in en agement with male member.

n the form of,v clutch member shown in Fig. 4, in addition to the projections -15a and depressions 16, the inclined surface 14a is provided with a plurality of recesses 30 similar to the recesses 23 in the plane face thereof.

. The operation of the device is as follows,

assuming that'the male-clutch member 11 is being rotated'by the gear 24, it will be seen that the ressure of the spring 27 will hold the fema e clutch member 19 with its projections 22 in engagement with the cooperating recesses of the male clutch member. If the resistance offered by the mechanism driven by the gear 26 exceeds a predetei-mined amount regulated by the pressure of the spring 27, the female clutch member will be moved to the right an amount suficient to disengage the clutch members. As the torque decreases the spring 27 will again move the clutch members into driving relationship, the projections 22 upon the inclined surface thereof engaging gradually before the projections upon the p ane surface. It will thus be seen that after the clutch has slipped it will take up again gradually without sudden jerks.

What I claim as new is:

1. In a clutch, the combination of a pair of cooperating driving and driven members having opposed substantially plane surfaces, one of said members having an annular iiange to provide an inclined ysurface extending at an angle from the periphery of its plane surface to form a cup shaped mem, ber, and the other of said members having an inclined surface parallel to and adapted to be substantially enclosed by said annular iange, one of said members being provided with a plurality of projections extending outwardly from its plane and inclined surfaces and the other of said members being provided with a plurality of cooperating recesses in which said projections are adapted to bereceived, the projections and recesses of said inclined surfaces being constructed and arranged to be engaged in driving relationship prior to the engagement of the projections and recesses of the plane surfaces whereby a gradual take up of the clutch vis produced. 2. ln a clutch, the combination of a pair of cooperating driving and driven members having opposed substantially plane surfaces, one of said members having an annular ange to provide an Ainclined surface extending at an angle from the periphery of its plane surface toA form a cup shaped August, 1919.

meente member, and the other of said members having an inclined surface parallel to and adapted to be substantially enclosed by said annular iange, one of sald members being provided with a plurality of projections eX- tending outwardly from and adjustable to and from its inclined surface and the other of said members being rovided on its inclined surface with a urality of depressions in which said projections are adapted to be received. I

3. In a clutch, the combination of a pair 4of cooperating driving and driven members having opposed substantially plane surfaces, one of said members having an annular fiange to provide an inclined surface eX- tending at an angle from the periphery of its plane surface to form a cup shaped member, and the other of said members having an inclined surface parallel to and adapted to be substantially enclosed by said annular flange, one of said members being provided with a plurality of pro'ections extending outwardly from and adjustable to and from its plane and inclined surfaces and the other ofsaid members being provided with a. plurality of cooperating recessesvin which said projections are adapted to be received, the projections and recesses of said inclined surfaces being constructed and arranged to be engaged in driving relationship prior to the engagement ofthe projections and -recesses of the plane surfaces whereby a gradual take up of the clutch is produced.

In testimony whereof, I have signed my name to' this specification in the presence of two subscribing witnesses, this 23d day of ANTHONY LANZETTA. j

Witnesses:

Jams F. Dummn, C. C. Bancnm. 

